hm

¹

1. hectometer; hectometers.

h'm

²

or hmm

[ hmm ]

interjection

1. (used typically to express thoughtful absorption, hesitation, doubt, or perplexity.)

HM

³

abbreviation for

1. Hispanic male.

H.M.

⁴

abbreviation for

1. Her Majesty.
2. His Majesty.

hm

¹

the internet domain name for

1. Heard and McDonald Islands

hm

²

symbol for

1. hectometre

h'm

³

/ hmmm /

interjection

1. used to indicate hesitation, doubt, assent, pleasure, etc

HM

⁴

abbreviation for

1. His ( or Her) Majesty
2. heavy metal (sense 1)
3. headmaster; headmistress