trainer
UK/'treɪnə/US/'treinә/
B2
Definitions
n.
A person who trains people or animals
教练，训练员
n.
(British) a soft sports shoe; a sneaker
（英）运动鞋
Root Breakdown
Root-derivedtraindraw, pull, drag; a line or series
+
-erone who does, agent
=trainer
train + -er (one who/that which) = 'one who trains.' In British English it also names the shoe you train in — a trainer.
Usage Guide
British/American difference: in BrE, trainers are athletic shoes (AmE: sneakers). The 'coach/instructor' sense is shared by both.
Example Sentences
- 1.
Her personal trainer designed a six-week program.
- 2.
He laced up his trainers and went for a run.